Frostveil Catacombs

Frostveil Catacombs is a secret cave hidden under Frostveil City. It is accessible by using HM8 Rock Climb to scale down the broken wall to the left of Frostveil Gym. Frostveil Catacombs offer several puzzles which, once complete, will allow access to the Calcite, Martensite and Dendrite Chambers for encountering Legendary Titans.

Puzzles
Click to view the guides for all puzzles.

First Puzzle
The first puzzle is a wall with writings on it in a straight room. The wall is written in Braille — a form of written language for the visually impaired to feel and understand. Decoding the language will state: "First Girafarig, last Dunsparce." This means that Girafarig has to be first and Dunsparce has to be last in player's party. Girafarig is found on Route 5, while Dunsparce can be encountered at Old Aredia. Once they are in their correct party slots, walking up to the wall will cause it to open, therefore completing the first puzzle.

Second Puzzle
The second puzzle is a significantly bigger room, with another wall at the end, and there are four colours that connect to the wall. In order to complete this puzzle, the player has to press the buttons for each colour in a certain order: Red, Green, Red, Blue, Blue, Yellow, Green.

The wall will then proceed to open. After it opens, HM6 Rock Smash is required to shatter a cave door, completing the second puzzle. The colour order for the puzzle is the same colour pattern as the 7 glass jars in a cabin with red roof on Route 15 from left to right.

Third Puzzle
The third puzzle is a big open space, with a rectangular tile game in the middle of it. In order to complete this puzzle, players will have to move the coloured dots into their corresponding colour on the floor, and try to make room for others to get to their own. This is the most challenging out of the previous puzzles. The proper order of the spheres is on the right of the page. After completing the third puzzle, the area will start violently shaking, and then it will state that some chambers have opened somewhere far away. From this point onwards, the 3 Chambers are accessible, and once the player has caught the 3 Legendary Titans, head to Route 14 with all of them in their party to open Titans' Throng for a final encounter with the last Legendary Titan......

Trivia

 * The final puzzle is very similar to the popular mobile game "Flow Free", except that players have to connect matching colours instead of connecting to colours on the ground.